Export Jasper Report As PDF And Save Into FileSystem

public void savePdfInvoice(String inputFileName, String outputFileName, Collection dataCollection, Map inputParameters) throws Exception {

ServletContext context = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();

String jrxmlReportPath = context.getRealPath("/WEB-INF/resources/report/" + inputFileName + ".jrxml");

try {

JasperReport jasperReport = JasperCompileManager.compileReport(jrxmlReportPath);

JRBeanCollectionDataSource jrbcds = new JRBeanCollectionDataSource(dataCollection);

/*if (jrbcds == null) {
System.out.println("....JRBCDS is null");
}
if (inputParameters == null) {
System.out.println("....inputParameters is null");
} */

JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, inputParameters, jrbcds);

String outputFile = context.getRealPath("/WEB-INF/resources/invoice/" + outputFileName + ".pdf");

JRExporter exporter = new JRPdfExporter();

/*
* Saves the PDF file generated inside
* ....../build/web/WEB-INF/resources/invoice/filename.pdf
*/
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, outputFile);
exporter.exportReport();

} catch (Exception e) {
System.out.println("JASPER EXCEPTION :: ");
e.printStackTrace();
}
}